ICCompressQuery

	Overview

	Group

	Quick Info

The ICCompressQuery macro queries a video compression driver to determine if it supports a specific input format or if it can compress a specific input format to a specific output format. You can use this macro or explicitly call the ICM_COMPRESS_QUERY message.

DWORD ICCompressQuery(

hic,
lpbiInput,
lpbiOutput
);

Parameters
hic

Handle of a compressor.

lpbiInput

Address of a BITMAPINFO structure containing the input format.

lpbiOutput

Address of a BITMAPINFO structure containing the output format. You can specify zero for this parameter to indicate any output format is acceptable.

Return Values
Returns ICERR_OK if the specified compression is supported or ICERR_BADFORMAT otherwise.

Remarks
When a driver receives this message, it should examine the BITMAPINFO structure associated with lpbiInput to determine if it can compress the input format.